Longlasting heat preservation The outer layer of the cold storage bag is made of 100 polyester fabric which is not easy to deform and has good sealing and thermal insulation The intermediate layer is made of pearl cotton to slow down the temperature loss rate The inner layer is highquality heatinsulating aluminum film Threelayer temperature control design perfect sealing and heat preservation for hours keeping your food fresh Enough Capacity The lunch bag is 906 In in length 61 In in width and 1083 In in height Easily store food snacks utensils etc for daily needs or for picnics Easy To Carry Collapsible Small Lunch Bag Collapsible Small Lunch Bag that folds and easily fits in a school bag tote Comes with a detachable adjustable shoulder strap with hook and a hand strap easy to carry hands free Rolltop Velcro ClosureDoublelayer sealing design large opening roll top sealing easy access to lunch plus Velcro sealing dont worry about the food or tableware in the bag falling Beautiful and practicalCute printed lunch bag with sugar skull pattern to make your lunch bag unique essential tote lunch bag for students office workers picnic camping fishing school